Question

6.In an A.P if k+1,8,k+9 are the consecutive terms, then k=​

Answer 1

Answer:

k is 2

Step-by-step explanation:

Since these terms are consecutive terms of an A.P., the middle term must be the average of the other two.

⇒(k−3)+(4k+3)=2(2k+1)

⇒5k=4k+2

⇒k=2

Thus, the required value of k is 2.

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Answer 2

8-(k+1)=(k+9)-8

8-k-1= k+9-8

7-k=k+1

2k=6

k3